Change emplace for vector and deque to create the temporary (when necessary) before any changes to the container are made. Nikolay Ivchenkov deserves the credit for pushing this problem and the solution for it.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159918 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/vector b/include/vector
index 0d5b6b8..04a23ab 100644
--- a/include/vector
+++ b/include/vector
@@ -1681,8 +1681,9 @@
}
else
{
+ value_type __tmp(_VSTD::forward<_Args>(__args)...);
__move_range(__p, this->__end_, __p + 1);
- *__p = value_type(_VSTD::forward<_Args>(__args)...);
+ *__p = _VSTD::move(__tmp);
}
}
else